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The scheduler is triggered at ready-to-send-requesst. It schedules
control blocks, data block and dummy blocks, depending on priority.
It provides upstream ressource by setting USF. The ressources are
assigned, if required. The ressources are dispatched round-robin.
In case of polling, the upstream ressource is given to MS at the
time it will respond to polling request.
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Now the MS receives dowlink LLC frames.
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Now packets are reassembled correctly.
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The OpenBTS socket functions are moved from main to pcu_l1_if.cpp.
New sysmo_l1_if.cpp is introduced. It used special unix socket interface
to connect to sysmo-BTS. This is required to access CCCH/RACH and info
about cell layout. Traffic is also forwarded via this interface, but
it direct access of L1 baseband DSP will be added soon.
In order to handle ready-to-send requests above l1_if, the transmit
queue (for downlink blocks) is moved to gprs_rlcmac.cpp.
The TBF instance additionally holds TRX and TS info, but this is only
a hack currently. TBF instance requires more details about allocated
ressources in the future.
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This is required, so it works in my environment. Might be revised soon.
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We use unsigned int type for readIndex and writeIndex parameters in bitvec_read_field() and bitvec_write_field() functions.
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this is probably a historic relict. None of them should be used, and I
cannot see any actual use of them either.
The only non-library code that we link now is libosmo-gb (ns/bssgp),
which soon will be turned into a real library.
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The code corresponds to commit a9aa4777cc1144897a77dfb6c5c3d7325705251e
in openbts-p2.8.git (Tue Jun 12 18:14:49 2012 +0400)
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